| 摘要 |
PURPOSE:To reduce a circuit scale by providing an adder circuit setting the output signals of two frequency characteristic converters out of a first frequency characteristic converter group and that of the frequency characteristic converter of a second frequency characteristic converter group as input, and outputs an addition result. CONSTITUTION:The frequency characteristic converters 2-4 are controlled by a reference error E1, and the frequency characteristic converters 5-7 by a reference error E2, and the frequency characteristic converters 3, 6 eliminate an interference component between the codes of inputted reproducing signals. Also, a replica is added on a crosstalk component from neighboring tracks included in output from the frequency characteristic converters 2, 4, and 5, 7 at the adder circuits 8-1, 8-2, and the polarity of the crosstalk component is set oppositely to that of the replica, negating with each other. Therefore, the number of steps in a filter required for the frequency characteristic converters 4, 5 can be reduced. In such a way, the circuit scale can be reduced. |
